Relay Tester/Secondary Circuit Tester
LQHV-105 Intelligent CT/PT Field Test System
Advanced all-in-one solution for protection-class transformer verification featuring automatic error curve generation and instant field reporting capabilities.
Product Parameters
Function Table
| I. Current Transformer (CT) | II. Voltage Transformer (PT) |
| 1. Magnetization Curve | 1. Excitation Characteristic Test |
| 2. Transformation Ratio Test | 2. Transformation Ratio Test |
| 3. Polarity | 3. Polarity |
| 4. 5％ and 10％ error curve | 4. Withstand Test of Power Frequency |
| 5. Current Injecting | 5. Degauss |
| 6. Degauss | 6. Calculation of Knee Point Value |
| 7. Withstand Test of Power Frequency Alternating Current | |
| 8. Automatic Calculation of Excitation Knee Point Value |
Technical Parameter Table
| Major Technical Parameters | |
| Operational Power Supply | AC220V±20V, 50～60Hz |
| Equipment Power Supply Output Waveform | Sine Wave |
| Single Machine Output Voltage of Excitation Characteristic | 0~1200V |
| Excitation Output Current Set | 0~20A |
| Single Machine Output Current of Transformation Ratio Test | 0~1000A |
| CT ratio measurement range | 5~25000A/5A(5000A/1A) |
| PT ratio measurement range | 1～500KV |
| Error | ≤0.5%(0.2%*Reading+0.3%*Range) |
| Operating Temperature | -10℃~+40℃ |
| Relative Humidity | <90RH% |
| Altitude | ≤1000m |
| Overall Dimension(Length*Width*Height) | 450*280*260(mm) |
| Weight | ≤30Kg |
Key Features
① Automatic Curve Generation
Precision 5% & 10% error curves with knee-point detection
② Dual-Mode Operation
Simultaneous CT & PT testing without reconfiguration
③ Instant Reporting
Built-in thermal printer + USB export to Word/Excel
④ Regulatory Compliance
Meets GB 20840.2-2014 & GB 20840.3-2013 standards
Enhanced Workflow
Smart Connection: Automatic terminal recognition
Parallel Testing: Run multiple test sequences in one cycle
Data Security: 3000+ test records with power-fail protection
Results Delivery: Print or export via USB 2.0
Technical Specifications
Display: 7" color LCD with graphical interface
Printer: 58mm thermal, 30 lines/second
Storage: 8GB internal (expandable via USB)
Power: AC 220V±15% / 50Hz
Dimensions: 320×280×150mm (compact design)
Weight: 21.8kg (field-portable)
Industry Applications
Utility Substations
Protection relay CT verification
Energy Metering
Revenue-grade PT accuracy testing
Manufacturing
Production line quality control
Certifications & Standards
GB 20840.2-2014 (Voltage Transformers)
GB 20840.3-2013 (Current Transformers)
IEC 61869-1:2007
DL/T 726-2013 (Power Industry Standard)
Why Choose LQHV-105?
✅ Time-saving: Complete all tests in single connection
✅ Error-proof: Automatic curve generation eliminates manual errors
✅ Field-ready: Lightweight design with all accessories included
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